P3131

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

- Turn power switch OFF and wait at least 20 seconds.
- Make sure that 12V battery voltage is 11 V or more.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE-I

With CONSULT
1.Turn power switch ON.
2.Turn power switch OFF and wait at least 35 minutes.
NOTE:
Proceeding to the next step is allowed without waiting for 35 minutes when checked that the SSOFF relay is OFF.
3.Turn power switch ON.
4.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- GO TO 3.

3. PERFORM DTC CONFIRMATION PROCEDURE-II

1.Turn power switch OFF.
2.Check that the charging status indicator is not illuminating, and wait at least 20 seconds.
3.Connect EVSE (with AC power input) and wait at least 10 seconds.
4.Disconnect EVSE and wait at least 35 minutes.
NOTE:
Proceeding to the next step is allowed without waiting for 35 minutes when checked that the SSOFF relay is OFF.
5.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK VCM POWER SUPPLY CIRCUIT

1.Turn power switch ON.
2.Check the voltage between IPDM E/R harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK FUSE

1.Turn power switch OFF.
2.Pull out #55 fuse.
3.Check the fuse is not fusing.
Is the inspection result normal?
YES- Replace IPDM E/R. Refer to "Removal and Installation" Removal And Installation.
NO- Replace the fuse after repairing the applicable circuit.

3. CHECK VCM POWER SUPPLY

1.Turn power switch OFF.
2.Disconnect VCM harness connector.
3.Turn power switch ON.
4.Check the voltage between VCM harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 4.

4. CHECK VCM POWER SUPPLY CIRCUIT

1.Turn power switch OFF.
2.Disconnect IPDM E/R harness connector.
3.Check the continuity between VCM harness connector and IPDM E/R harness connector.





Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.

5. CHECK TRACTION MOTOR INVERTER POWER SUPPLY (POWER ON) CIRCUIT

1.Turn power switch OFF.
2.Reconnect VCM harness connector.
3.Disconnect traction motor inverter harness connector (F13).
4.Perform confirmation procedure. Refer to "DTC Logic" P312A.
Is DTC "P3131" detected?
YES- GO TO 6.
NO- Check traction motor inverter power supply (POWER ON) circuit for short to power.

6. CHECK LBC POWER SUPPLY (POWER ON) CIRCUIT

1.Turn power switch OFF.
2.Reconnect traction motor inverter harness connector harness connector.
3.Disconnect LBC harness connector (B24).
4.Perform confirmation procedure. Refer to "DTC Logic" P312A.
Is "P3131" detected?
YES- GO TO 7.
NO- Check LBC power supply (POWER ON) circuit for short to power.

7. CHECK ON BOARD CHARGER POWER SUPPLY (POWER ON) CIRCUIT

1.Turn power switch OFF.
2.Reconnect LBC harness connector.
3.Disconnect on-board charger harness connector (B26).
4.Perform confirmation procedure. Refer to "DTC Logic" P312A.
Is DTC "P3131" detected?
YES- GO TO 8.
NO- Check on board charger power supply (POWER ON) circuit for short to power.

8. CHECK A/C AUTO AMP. POWER SUPPLY (POWER ON) CIRCUIT

1.Turn power switch OFF.
2.Reconnect on-board charger harness connector.
3.Disconnect A/C auto amp. harness connector (M50).
4.Perform confirmation procedure. Refer to "DTC Logic" P312A.
Is DTC "P3131" detected?
YES- GO TO 9.
NO- Check A/C auto amp. power supply (POWER ON) circuit for short to power.

9. CHECK TCU POWER SUPPLY (POWER ON) CIRCUIT

1.Turn power switch OFF.
2.Reconnect A/C auto amp. harness connector.
3.Disconnect TCU harness connector (M2).
4.Perform confirmation procedure. Refer to "DTC Logic" P312A.
Is DTC "P3131" detected?
YES- GO TO 10.
NO- Check TCU power supply (POWER ON) circuit for short to power.

10. CHECK ELECTRIC SHIFT CONTROL MODULE POWER SUPPLY (POWER ON) CIRCUIT

1.Turn power switch OFF.
2.Reconnect TCU harness connector.
3.Disconnect electric shift control module harness connector (M59).
4.Perform confirmation procedure. Refer to "DTC Logic" P312A.
Is DTC "P3131" detected?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Check electric shift control module power supply (POWER ON) circuit for short to power.